As a point of comparison, we live in Iowa now and pay $130 to register a 2007 Honda Fit and $250 to register a 2009 Hyundai Sonata.I know these are late model cars... but I'm sure we'd be surprised in Colorado.This isn't a deal-breaker, just a cost I'm trying to estimate. Your property taxes are less than half what we currently pay. And state income taxes are lower in Colorado as well. In the big scheme, we'd come out way ahead.